Rats in proestrus-estrus present more attention behaviors toward males and exhibit higher prefrontal-parietal EEG synchronization

Domínguez-Estrada, Cristóbal Adrián; Hernández‐Arteaga, Enrique; Gómez-Méndez, Abril Zagnitte; Guevara, Miguel Ángel; Hernández‐González, Marisela

doi:10.1016/j.physbeh.2023.114136

Cited by 1 publication

(1 citation statement)

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“…Among the vigilance stages, the highest amplitude excitatory vAEP responses (N1 and N2) were seen during PRO W. A recent study reported increased prefrontal-parietal LFP synchronization during PRO W compared to DIE W in the presence of a male 57 . However, the level of local synchronization in the vertex region can be more important shaping vAEP parameters.…”

Section: Discussionmentioning

confidence: 86%

Sleep- and sleep deprivation-related changes of vertex auditory evoked potentials during the estrus cycle in female rats

Tóth,

Traub,

Bencsik

et al. 2024

Sci Rep

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The estrus cycle in female rodents has been shown to affect a variety of physiological functions. However, little is known about its presumably thorough effect on auditory processing during the sleep–wake cycle and sleep deprivation. Vertex auditory evoked potentials (vAEPs) were evoked by single click tone stimulation and recorded during different stages of the estrus cycle and sleep deprivation performed in metestrus and proestrus in female rats. vAEPs showed a strong sleep-dependency, with the largest amplitudes present during slow wave sleep while the smallest ones during wakefulness. Higher amplitudes and longer latencies were seen in the light phase during all vigilance stages. The largest amplitudes were found during proestrus (light phase) while the shortest latencies were seen during estrus (dark phase) compared to the 2nd day diestrus baseline. High-amplitude responses without latency changes were also seen during metestrus with increased homeostatic sleep drive. More intense and faster processing of auditory information during proestrus and estrus suggesting a more effective perception of relevant environmental cues presumably in preparation for sexual receptivity. A 4-h sleep deprivation resulted in more pronounced sleep recovery in metestrus compared to proestrus without difference in delta power replacement suggesting a better tolerance of sleep deprivation in proestrus. Sleep deprivation decreased neuronal excitability and responsiveness in a similar manner both during metestrus and proestrus, suggesting that the negative consequences of sleep deprivation on auditory processing may have a limited correlation with the estrus cycle stage.

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Section: Discussionmentioning

confidence: 86%